Keepalived+lvs

1

<code># yum install ipvsadm</code>

Keepalived :

1. get keepalived.

<code># wget http://www.keepalived.org/software/keepalived-1.2.12.tar.gz</code>

2.解压keepalived.

<code># tar xzvf keepalived-1.2.12.tar.gz</code>

3. 进入目录

<code># cd keepalived-1.2.12</code>

4. 安装包.

<code># yum install openssl-devel.x86_64 kernel-headers kernel-devel</code>

5. 配置keepalived.

<code>#./configure</code>

6. 编译.

<code># make</code>

7. 编译安装.

<code># make install</code>

8.自启动服务.

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<code>#  cd /etc/sysconfig </code>

<code>#  ln -s /usr/local/etc/sysconfig/keepalived . </code>

<code>#  cd /etc/rc3.d/ </code>

<code>#  ln -s /usr/local/etc/rc.d/init.d/keepalived S100keepalived </code>

<code>#  cd /etc/init.d/ </code>

<code>#  ln -s /usr/local/etc/rc.d/init.d/keepalived</code>

<code>#  ln -s /usr/local/sbin/keepalived /usr/sbin/</code>

<code>#  cd /etc/keepalived</code>

<code>#  ln -s /usr/local/etc/keepalived/keepalived.conf .</code>

keepalived.conf

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<code>! Configuration File </code><code>for</code> <code>keepalived</code>

<code>global_defs { </code>

<code>   </code><code>router_id MYSQLD </code>

<code>}</code>

<code>vrrp_instance MYSQLD_3306 { </code>

<code>        </code><code>state MASTER </code>

<code>        </code><code>interface em2 </code>

<code>        </code><code>virtual_router_id 22 </code>

<code>        </code><code>priority 101 </code>

<code>        </code><code>advert_int 1 </code>

<code>        </code><code>mcast_src_ip 192.168.253.9 </code>

<code>        </code><code>authentication { </code>

<code>                </code><code>auth_type PASS </code>

<code>                </code><code>auth_pass lekan </code>

<code>        </code><code>}</code>

<code>        </code><code>virtual_ipaddress { </code>

<code>                </code><code>192.168.253.100</code><code>/24</code> <code>dev em2 scope global </code>

<code>        </code><code>} </code>

<code>        </code><code>notify_master </code><code>"/etc/keepalived/notification_email.sh master"</code> 

<code>        </code><code>notify_backup </code><code>"/etc/keepalived/notification_email.sh backup"</code> 

<code>virtual_server 192.168.253.100 3306 { </code>

<code>        </code><code>delay_loop 2 </code>

<code>        </code><code>lb_algo rr </code>

<code>        </code><code>lb_kind DR </code>

<code>        </code><code>persistence_timeout 10 </code>

<code>        </code><code>protocol TCP</code>

<code>        </code><code>real_server 192.168.253.6 3306 { </code>

<code>                </code><code>weight 1 </code>

<code>                </code><code>inhibit_on_failure </code>

<code>                </code><code>notify_up </code><code>"/etc/keepalived/mysql.sh up"</code> 

<code>                </code><code>notify_down </code><code>"/etc/keepalived/mysql.sh down"</code> 

<code>                </code><code>TCP_CHECK { </code>

<code>                        </code><code>connect_timeout 3 </code>

<code>                        </code><code>nb_get_retry 3 </code>

<code>                        </code><code>delay_before_retry 3 </code>

<code>                        </code><code>connect_port 3306 </code>

<code>                </code><code>} </code>

<code>        </code><code>real_server 192.168.253.8 3306 { </code>

mysql.sh

<code>#!/bin/bash</code>

<code>case</code> <code>$1 </code><code>in</code> 

<code>        </code><code>up) </code>

<code>                </code><code>echo</code> <code>"mysqld up"</code> <code>| mutt -s </code><code>"keepalived mysqld"</code> <code>[email protected] </code>

<code>        </code><code>;; </code>

<code>        </code><code>down) </code>

<code>                </code><code>echo</code> <code>"mysqld down"</code> <code>| mutt -s </code><code>"keepalived mysqld"</code> <code>[email protected] </code>

<code>        </code><code>*) </code>

<code>                </code><code>echo</code> <code>"keepalived"</code> <code>&gt;&gt; </code><code>/home/tong</code><code>.li</code><code>/keepalived</code><code>.txt </code>

<code>esac</code>

notification_email.sh

<code>        </code><code>master) </code>

<code>                </code><code>echo</code> <code>"keepalived master failover"</code> <code>| mutt -s </code><code>"keepalived"</code> <code>[email protected] </code>

<code>        </code><code>backup) </code>

<code>                </code><code>echo</code> <code>"keepalived backup failover"</code> <code>| mutt -s </code><code>"keepalived"</code> <code>[email protected] </code>

realserver.sh

<code>#description:start realserver</code>

<code>VIP=192.168.253.100</code>

<code>. </code><code>/etc/rc</code><code>.d</code><code>/init</code><code>.d</code><code>/functions</code>

<code>case</code> <code>"$1"</code> <code>in</code>

<code>start)</code>

<code>    </code><code>/sbin/ifconfig</code> <code>lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up</code>

<code>    </code><code>/sbin/route</code> <code>add -host $VIP dev lo:0</code>

<code>    </code><code>echo</code> <code>"1"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/lo/arp_ignore</code>

<code>    </code><code>echo</code> <code>"2"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/lo/arp_announce</code>

<code>    </code><code>echo</code> <code>"1"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/all/arp_ignore</code>

<code>    </code><code>echo</code> <code>"2"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/all/arp_announce</code>

<code>    </code><code>sysctl -p &gt;</code><code>/dev/null</code> <code>2&gt;&amp;1</code>

<code>    </code><code>echo</code> <code>"start LVS of RealServer DR"</code>

<code>    </code><code>;;</code>

<code>stop)</code>

<code>    </code><code>/sbin/ifconfig</code> <code>lo:0 down</code>

<code>    </code><code>route del $VIP&gt;</code><code>/dev/null</code> <code>2&gt;&amp;1</code>

<code>    </code><code>echo</code> <code>"0"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/lo/arp_ignore</code>

<code>    </code><code>echo</code> <code>"0"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/lo/arp_announce</code>

<code>    </code><code>echo</code> <code>"0"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/all/arp_ignore</code>

<code>    </code><code>echo</code> <code>"0"</code><code>&gt;</code><code>/proc/sys/net/ipv4/conf/all/arp_announce</code>

<code>    </code><code>echo</code> <code>"close LVS of RealServer DR"</code>

<code>*)</code>

<code>    </code><code>echo</code> <code>"Usage:$0 {start|stop}"</code>

<code>    </code><code>exit</code> <code>1</code>

<code>;;</code>

<code></code>

本文转自 Art_Hero 51CTO博客，原文链接：http://blog.51cto.com/curran/1387497，如需转载请自行联系原作者